Diretor/a
Burt Balaban
DIRETOR/A
Elenco (na ordem dos créditos)
Patricia Neal
Susan North
Helmut Dantine
The Stranger
Derek Bond
Arthur Walker
Cyril Luckham
Dr. Meinard
Willoughby Gray
Tom
Marigold Russell
Gretchen
Arthur Young
Scientist
Kenneth Edwards
Charles Dixon
David Garth
First Police Officer
Stanley Van Beers
General
Nigel Green
Second Police Officer
Graham Stuart
Police Chief
Jack Gwillim
Representative of Parliamentuncredited
John Le Mesurier
Man at Deskuncredited
Hugh Moxey
Secretary of the Interioruncredited
Peter Sallis
Soldieruncredited